Table 3 Factor and field weights used in the cost-spread function that produced likely haul routes and distances.
From: Changes in timber haul emissions in the context of shifting forest management and infrastructure
| Factor | % Influence | Field | Scale Value |
|---|---|---|---|
| Road Type | 80 | Interstate highway | 1 |
| US highways | 3 | ||
| State & County highways | 5 | ||
| Local or rural road, city street | 7 | ||
| Vehicular trail | 12 | ||
| Miscellaneous (traffic circle, access ramp, etc.) | 20 | ||
| Private drives or foot trails | 30 | ||
| No coded road | 400 | ||
| Slope | 20 | 0-10% | 1 |
| 10-20% | 5 | ||
| 20-30% | 10 | ||
| 30-40% | 15 | ||
| 40-50% | 20 | ||
| 50-60% | 30 | ||
| 60-70% | 40 | ||
| 70-80% | 50 | ||
| 80+% | 60 |